Stock is the basis of all soups made from meat, and is really the juice of the meat extracted by long and gentle simmering. In making stock for soup always use an agate or porcelain-lined stock pot. Use one quart of cold water to each pound of meat and bone. Use cheap cuts of meat for soup stock. Excellent stock may be made from bones and trimmings of meat and poultry. Wash soup bones and stewing meat quickly in cold water. Never allow a roast or piece of stewing meat to lie for a second in water. Aunt Sarah did not think that wiping meat with a damp cloth was all that was necessary (although many wise and good cooks to the contrary). Place meat and soup bones in a stock pot, pour over the requisite amount of soft, cold water to extract the juice and nutritive quality of the meat; allow it to come to a boil, then stand back on the range, where it will just simmer for 3 or 4 hours. Then add a sliced onion, several sprigs of parsley, small pieces of chopped celery tops, well-scraped roots of celery, and allow to simmer three-quarters of an hour longer. Season well with salt and pepper, 1 level teaspoonful of salt will season 1 quart of soup.
Strain through a fine sieve, stand aside, and when cool remove from lop the solid cake of fat which had formed and use for frying after it has been clarified. It is surprising to know the variety of soups made possible by the addition of a small quantity of vegetables or cereals to stock. A couple tablespoonfuls of rice or barley added to well-seasoned stock and you have rice or barley soup. A small quantity of stewed, sweet corn or noodles, frequently “left-overs,” finely diced or grated carrots, potatoes, celery or onions, and you have a vegetable soup. Strain the half can of tomatoes, a “left-over” from dinner, add a tablespoonful of butter, a seasoning of salt and pepper, chicken to a creamy consistency with a little cornstarch, add to cup of soup stock, serve with croutons of bread or crackers, and you have an appetizing addition to dinner or lunch.